I was just wondering if anyone was aware of a reason why a programme created in Visual basic wouldn't run on a Mac running Windows, but will run on a PC. I have a programme that I will need to use for work. It is an excel file that's been created using VB6. It seems to run on any Windows machine, I've tried it on a few friends windows boxes/ laptops, and it loads every time without issue regardless of OS. The moment I try to run it on a Mac, either through Bootcamp or VMWare Fusion, it loads the front screen and then comes up with a message that says 'Compile error in hidden module'. I've used XP, Windows 7, and now Windows 8. Office 2010 and now Office 2013. All versions are fully licences. The only version I haven't tried using Bootcamp is Windows 8, which I've run in VMWare only.